GPR Steering Nozzle Replacement

I plan on replacing the plastic steering nozzle.
I feel more comfortable with a cast part than the OEM plastic.
Which aftermarket nozzle is recommended?
Riva, R/D and Pro-Tec all sell them.
Pro-tec has (2) available - extended 20MM or 50MM
Riva & R/D's are extended nozzles, but they don't say by how much.
All of them have the additional mounting hole for the steering linkage to make them "quick turn" nozzles.
I assume the inside diameter on all these are the same as OEM.
I don't race closed course so I figured the 50MM Pro-Tec extended nozzle would probably not be an option.
From what I've read, top speed is not affected by this mod.
To me it's a safety issue at close to 80 mph
Any thoughts would be appreciated